ak5700 AKM Semiconductor, Inc., ak5700 Datasheet - Page 37

• Manufacturer Part Number: ak5700
• Description: 16-bit ?? Mono Adc With Pll & Mic-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The input digital volume becomes a manual mode when ALC bit is “0”. This mode is used in the case shown below.
IVL7-0 bits set the gain of the volume control (Table 29). The IVOL value is changed at zero crossing or timeout. Zero
crossing timeout period is set by ZTM1-0 bits.
If IVL7-0 bits are written during PMADC bit = “0”, IVOL operation starts with the written values at the end of the ADC
initialization cycle after PMADC bit is changed to “1”.
MS0569-E-01
Input Digital Volume (Manual Mode)
1. After exiting reset state, set-up the registers for the ALC operation (ZTM1-0, LMTH and etc)
2. When the registers for the ALC operation (Limiter period, Recovery period and etc) are changed.
3. When IVOL is used as a manual volume.
For example; when the change of the sampling frequency.
IVL7-0
EFH
F1H
F0H
92H
91H
90H
03H
02H
01H
00H
:
:
Table 29. Input Digital Volume Setting
GAIN (dB)
+35.625
−53.625
+35.25
+0.375
−0.375
−53.25
MUTE
+36.0
−54
0.0
:
:
- 37 -
0.375dB
Step
Default
[AK5700]
2006/12